Qwen3.5 2B

by Alibaba

Qwen3.5 2B is a lightweight 2 billion parameter dense model designed for efficient deployment while keeping multimodal vision-language capability, built on a hybrid architecture that pairs Gated DeltaNet with attention layers. It supports a 262,144 token native context window and runs in non-thinking mode by default for faster responses. Reported results include MMLU-Pro 55.3 and MMMU 64.2, with the model handling text, image, and video inputs across more than 200 languages. Thinking mode can be enabled when a task calls for step-by-step reasoning. Its small footprint makes it well suited to prototyping, task-specific fine-tuning, and resource-constrained scenarios where a compact multimodal model is preferred.

Key info

Input
Output
Features
Context window
262K
Max output
262K

Benchmarks

Independent benchmark scores — composite indices for reasoning, coding, and math, plus individual eval scores where available.

Intelligence Index6.9
Coding Index2.9
Reasoning & knowledge
GPQA Diamond
46%
Humanity's Last Exam
3%
Long-context reasoning
21%
Agentic & tool use
Terminal-Bench Hard
4%
τ²-Bench Telecom
69%
Math & instruction following
IFBench
31%

Available routes

No routes currently available — Qwen3.5 2B isn't routed through the Opper gateway right now. It may return.

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